Issued Patents All Time
Showing 26–29 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5122435 | Amido-containing azulene squaric acid dyes, intermediates therefor and optical recording medium | Bernhard Albert, Sibylle Brosius, Klaus D. Schomann, Harald Kuppelmaier | 1992-06-16 |
| 5087727 | A zulenes containing a urethane group | Wolfgang Schrott, Peter Neumann, Sibylle Brosius, Klaus D. Schomann, Harald Kuppelmaier | 1992-02-11 |
| 4990649 | Azulenesquaric acid dyes that contain urethane groups | Wolfgang Schrott, Peter Neumann, Sibylle Brosius, Klaus D. Schomann, Harald Kuppelhamier | 1991-02-05 |
| 4966798 | Optical recording medium | Sibylle Brosius, Helmut Barzynski, Karl-Heinz Feuerherd, Wolfgang Schrott, Bernhard Albert +3 more | 1990-10-30 |